@article{SLC_2018_80B_a89,
     author = {Per Alexandersson and Jim Haglund, and George Wang},
     title = {From {Generalized} {Permutahedra} to {Grothendieck} {Polynomials} via {Flow} {Polytopes}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {80B},
     year = {2018},
     url = {http://geodesic.mathdoc.fr/item/SLC_2018_80B_a89/}
}